chromeos/pairing/host_pairing_controller.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROMEOS_PAIRING_HOST_PAIRING_CONTROLLER_H_
   6 #define CHROMEOS_PAIRING_HOST_PAIRING_CONTROLLER_H_
   7
   8 #include <string>
   9
  10 #include "base/macros.h"
  11 #include "chromeos/chromeos_export.h"
  12
  13 namespace chromeos {
  14
  15 class CHROMEOS_EXPORT HostPairingController {
  16  public:
  17   enum Stage {
  18     STAGE_NONE,
  19     STAGE_WAITING_FOR_CONTROLLER,
  20     STAGE_WAITING_FOR_CODE_CONFIRMATION,
  21     STAGE_UPDATING,
  22     STAGE_WAITING_FOR_CONTROLLER_AFTER_UPDATE,
  23     STAGE_WAITING_FOR_CREDENTIALS,
  24     STAGE_ENROLLING,
  25     STAGE_ENROLLMENT_ERROR,
  26     STAGE_PAIRING_DONE,
  27     STAGE_FINISHED
  28   };
  29
  30   struct UpdateProgress {
  31     // Number in [0, 1].
  32     double progress;
  33   };
  34
  35   class Observer {
  36    public:
  37     Observer();
  38     virtual ~Observer();
  39
  40     // Called when pairing has moved on from one stage to another.
  41     virtual void PairingStageChanged(Stage new_stage) = 0;
  42
  43     // Called periodically on |STAGE_UPDATING| stage. Current update progress
  44     // is stored in |progress|.
  45     virtual void UpdateAdvanced(const UpdateProgress& progress) = 0;
  46
  47    private:
  48     DISALLOW_COPY_AND_ASSIGN(Observer);
  49   };
  50
  51   HostPairingController();
  52   virtual ~HostPairingController();
  53
  54   virtual void AddObserver(Observer* observer) = 0;
  55   virtual void RemoveObserver(Observer* observer) = 0;
  56
  57   // Returns current stage of pairing process.
  58   virtual Stage GetCurrentStage() = 0;
  59
  60   // Starts pairing process. Can be called only on |STAGE_NONE| stage.
  61   virtual void StartPairing() = 0;
  62
  63   // Returns device name.
  64   virtual std::string GetDeviceName() = 0;
  65
  66   // Returns 6-digit confirmation code. Can be called only on
  67   // |STAGE_WAITING_FOR_CODE_CONFIRMATION| stage.
  68   virtual std::string GetConfirmationCode() = 0;
  69
  70  private:
  71   DISALLOW_COPY_AND_ASSIGN(HostPairingController);
  72 };
  73
  74 }  // namespace chromeos
  75
  76 #endif  // CHROMEOS_PAIRING_HOST_PAIRING_CONTROLLER_H_